Start with the evidence
Identify which missing sources or unresolved questions affect other work. Keep their dependencies visible rather than assigning priority solely by the order items arrived.
Work through the example
A missing full statement blocks account matching, while a spelling correction does not. Both deserve attention, but retrieving the statement may unlock several independent checks.
Make the next step clear
Assign a clear next action and owner to the blocking item, then continue work that can proceed safely. Revisit priorities when the missing evidence arrives rather than leaving an old urgency label unchanged.
Keep the source context
Keep the review period, source set and unresolved questions explicit. A checklist records work performed; it does not by itself establish that financial statements are complete or compliant. Use the appropriate reviewer for decisions about accounting treatment.